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In qualitative analysis, to identily the...

In qualitative analysis, to identily the HA group sulphides, HCl is added to salt solution before the addition of `H_(2)S`. Because

A

Low `S^(2-) ` ion concentration is required to get ppt

B

High `S^(2-) ` ion concentration is required to get ppt

C

IIA group metal sulphides have higher values of `K_(sp) ` than that of IVA group metal sulphides

D

`P^(H) ` value increases

Text Solution

Verified by Experts

The correct Answer is:
A
HCl ensures low conc. Of `S^(2-) `
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